| Abbreviation | Definition |
|---|---|
| SRP | Spatial Reuse Protocol |
| SRP | Specialized Resource Point |
| SRS | Supported Residential Service |
| SRTS | Synchronous Residual Time Stamp |
| SRU | Single Receiver Unit |
| SS1 | Signalling System 1 (500/20 Hz tones) |
| SS2 | Signalling System 2 (600/750 Hz tones) |
| SS3 | Signalling System 3 (2280 Hz tone) |
| SS4 | Signalling System 4 (2040/2400 Hz tones) |
| SS5 | Signalling System 5 (2400/2600 Hz tones) |
| SS6 | Signalling System 6 |
| SS7 | Signalling System 7 |
| SSAP | Source Service Access Point |
| SSB | Single SideBand |
| SSC | Service Shortcut Changer |
| SSG | Signalling Server Global |
| SSM | Source-Specific Multicast |
| SSM | Synchronization Status Message |
| SSMA | Spread Spectrum Multiple Access |
| SSN | Switched Service Network |